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W. A. DAVIS, Executor. FEED MECHANISM FOR SEWING MACHINES.

N0. v353,257. Patented Nov. 23. 1886.

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(No Model.) 2 Sheets-Sheet 2.

J. A. DAVIS, Deod. W. A. DAVIS, Executor. FEED MECHANISM FOR SEWINGMACHINES.

No. 353,257 Patented Nov. 23, 1886.

UNITED STATES PATENT OFFICE.

JOB A. DAVIS, OF BOSTON, MASSACHUSETTS; WILLARD A. DAVIS (EXEGUTOR OFSAID JOB A. DAVIS, DECEASED) AS SIGNOR OF ONE-HALF TO LEE E. MOORE, BOTHOF SAME PLACE.

FEED MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 353,257, dated November23, 1886.

Application filed December 22, 1885. Serial No. 186,472. (No model.)

To aZZ whom it may concern.- forked at its upper end to receive theshaft0, Be it known that I, JOB A. DAVIS, of Bosas shown in Fig. 3. The lowerend of this ton, in the county of Suffolk and State of Maslink L isloosely connected, preferably by a 5 sachusetts, have invented a new anduseful Imball-and socket joint, J, with an arm, K,

5 provement in Feed Mechanism for Sewing-Maprojecting from a rock-shaft,N, mounted in chines, of which the following, taken in consuitablebearings formed on the frame, as in nection with the accompanyingdrawings, is a Figs. 1 and 2. specification. At the front end of theshaft N an arm, R 60 The object of this invention is to provide a iserected, having its upper end vertically resimple feed mechanism of theclass known as cessed to receive the edge of the swinging needle-feedapparatus, in which the goods plate X, Fig. 2, and provided with an adare carried forward intermittently by a latjusting-screw, S bearing onsuch edge to'regeral movement of the needle. ulate the stroke of the armR or rather the The general arrangement of the machine time in saidstroke when it shall begin to I 5 shown in the drawings, aside from thefeed move the plate X. This plate returns against mechanism, is similarto that set forth in my a stop, 0 under the action of a spring, Kapplications, Serial Nos. 186,467 and 186,470, secured to the frame by ascrew Y It follows for patents on wax-thread sewing-machines, that ifthe screw S is retracted so as not to 70 filed simultaneously herewith,to which referquite touch the plate X when the arm It begins ence may bemade, the same part in all cases to move, its movement will not carrythe plate being designated by the same letter. X the full length of thestroke, and thus the My present invention consistsin the devices extentto which the work will be advanced by and combinations of devices setforth in the the sidewise movement of the needle while 75 appendedclaim. passed through it and through the work-plate In the drawings,Figure 1 is a side eleva- B is readily controlled.

tion, showing my present improvement ap- It will be clear withoutfurther explanation plied to a suitable frame. Fig. 2 is an end thatwhen in the rotation of the pulley D the elevation of the same, and Fig.3 an enlarged cam-grove G forces down the link L and arm 80 detail, themain shaft in transverse section on K, the rock-shaft N will be turnedslightly linemw, Fig. 1. on its axis, and the upright arm R fixed Theneeedle A has a vertical reciprocation thereon will be swung slightly tothe left in imparted to it by the oscillation of an ob- Fig. 1, carryingwith it the plate X, needleliquely-slotted plate, U, which engages a barZ, andneedleAZwith thework being'oper- 85 stud, V, projecting from theside of the neeated upon.

dle'bar Z, as set forth in detail in my appli- What I claim is I cationNo. 186,470, hereinbefore referred to. The combination, with theneedle-bar Z The needle-bar Z is mounted in a recess in and mechanismfor reciprocating the same a vertical plate, X, pivoted to the frame atvertically, of the swinging plate X, in which 90 Y, so that a slightswinging movement may said needle-bar works, the rock-shaft N, hav- 0 begiven to it, as also explained in said case ing arms K. and R the latterprovided with No. 186,470. I however effect this lateral theadjusting-screw S", the link L, and the movement on the pivot Y by mypresent inrotary pulley D, having the cam-groove G, vention in asomewhat simpler manner than substantially as set forth. 9 5 in suchother case, as will be explained. In testimony whereof Ihave signed myname A is the frame of the machine, and O the to this specification, inthe presence of two submain shaft rotating in bearings B. D is ascribing witnesses, 011 this 13th day of Novempulley fixed on saidshaft, and revolving in her, A. D. 1885. i

the direction indicated by the arrows, Figs. 2 JOB A DAVIS.

and 3. In the side of the pulleyD is a cam-groove, Witnesses:

G, to receive a stud and friction-roller, H, MILAN F. STEVENS,

projecting from a depending rod or link, L, WILLARD A. DAVIS.

